Exclusive - Trump expected to sign executive orders on immigration

U.S. President Donald Trump hosts a meeting with business leaders in the Roosevelt Room of the White House in Washington January 23, 2017. REUTERS/Kevin Lamarque

WASHINGTON (Reuters) - U.S. President Donald Trump is expected to sign executive orders starting on Wednesday that include a temporary ban on most refugees and a suspension of visas for citizens of Syria and six other Middle Eastern and African countries, say congressional aides and immigration experts briefed on the matter.

Trump, who tweeted that a "big day" was planned on national security on Wednesday, is expected to ban for several months the entry of refugees into the United States, except for religious minorities escaping persecution, until more aggressive vetting is in place.